don't upgrade. The paid version is not worth playing because the computer cheats terribly! it rolls all the rolls it needs to win - everytime! It seems to cheat more the longer you play (on hard level anyway). so although lite is too easy - the paid version is a waste of time! Sorry.

buy low sell high; too easy to make money when you know exactly what low is and high is. Heroin low is always around 4-5k and high is 10-11k; cocaine low is 10-11k high is 20-21k; crack low is 1k high is 3k; I mostly deal with the more expensive stuff to make money faster. I start out with borrowing 500K-- any more than that is unnecessay. Trick is to pay off loan shark as fast as you can, but gotta leave yourself money to buy low as well. anyway enough said, my highest score is $4.3million after 5 times of playing since i dl it